Operating mechanism for tubbing-machines.



. Patented Mar;13,1917.

a ERS ca. PNom-Ll'nm par isan airarrr eerie OPERATING MECHANISM FOR.TUBBING-MACI-IIN ES.

Application filed August 23, 1916. 1 Serial N 0. 116,477.

To all whom it may concern Be it known that I, FRED BLATTNER,JI'.,

a citizen of the United States, residing at Brooklyn, in the county ofKings and State of New York, having invented certain new and usefulImprovements in Operating Mechanism for Tubbing-Machines, and do herebydeclare that the following is a full,-

clear, and exact,description of the same, ref-; erence being had to theannexed drawings, making a part of this specification, and to theletters and figures of reference marked thereon. v

My invention relates to the swinging legs of tubbing machines which aremachines for leathering furriers skins such as rats, skunks, etc., thatare used in the manufac ture of coats, mufis and neck-pieces, These legsas ordinarily constructed are of wood. The object of my invention is toprovide a leg which being of metal will be free from the objections towooden legs and which in other respects structurally will'be animprovement in regard to the matters, of ad justment for wear and:convenience of re moving and replacing the box of the crank shaft bywhich the swinging or oscillating movement is imparted to the legs. Tothis end, my invention consists in the leg having the characteristics ofconstruction substan-' tially as hereinafter specified and claimed.

In the accompanying drawings,

Figure 1 is a .perspectiveview of a leg and enough of a tubbing machineto illustrate my invention;

Fig. 2 is a detail view in perspective of the leg shown removed from themachine.

Fig. 3 is a detail view partly in section and partly in side elevationof the adjusting.

device.

The leg 10 is a one-piece or integral cast,

iron member having at its top the half box 11 by which it is pivotallyhung and at its bottom the triangular shaped extremity 112- for theattachment and support of the usual foot.

The crank shaft 13 at each end as usual engages a box 14 that isslidably'c'onnected with the leg in order to allow the turning of thecrank to swing or oscillate the leg. The crank box is guided in itsrectilinear movement by a pair of wedge bars 15 which engage the box onopposite sides and their box engaging faces being parallel, theinclination being on the outer face of each Specification of LettersEatent.

Patented Mar. 13, 1317.

wedge and the inclined outen face of each wedgeengages thecorrespondingly inclined side surface of a slot 16 which extendslongitudinally of the leg. Each wedge is adjustablysecured in place bythe bolts 17 so for each of which a slot 18 is provided in the leg sothat by the longitudinal adjustment of the two wedges their'inner box engaging sidesmay be nicely adjusted'to take up or compensate for wear.The" crank box can be removed. when necessary merely by the removing ofthe wedges and without any disturbance of'the crankshaft.

For each of the bolts 17 there are two tapped holes 19 in the wedge inone or the other of which the boltisplacedi I As the bolt can thus beshifted to different positions longitudinally of the wedge, I am enabledto make the slot 18 shorter which-is an important consideration in thatit avoids weakening the'leg.

Extending between the two wedges "at their upper ends is asteel bar20whichhas each end reduced and formed into a round horizontal projection21 that enters a' hole in the contiguous wedge and slidably fitsthethreaded portion of a vertical bolt 22 which passes through a bridgeor cross bar 23 on the leg with its head above the bridge while belowthe bridge it is provided with a look not 24.. Said cross bar with thebolt forms a safety device so that should the screws 17 become loose thewedges will nevertheless not drop and it also is a means for thevertical adjustment of the wedges.

The wooden leg ordinarily used is built up of several pieces which aresecured together by bolts, and is a construction undesirable from themanufacturing standpoint and also because the warping of the woodimpairs the alinement; of the machine parts and renders it worthless. Bymy invention since the leg -ment at the other end and a slot withopponed sides in combination With a In testimony whereof Iaflixmysignature at 1 i H zbox situatedjn saidslot, Wedges in presence of twoWitnesses. 5 2 sides of the? box in the slot, 2 FRED BLATTNER, JR. 7chm; tending between and slidab'ly'con- Witnesses: 1 [1 the Wedges, andan adjustable GEORGE DmTRIGH, 1 V V i 5 g i ygg cross bar ARTHUR F.LAMSON. V V ggp t is patent maybe obtained fer five cents each, byaddressing the fiommissioner of Patents, o es of th Washington D. G. 7VP t

